I'm looking at house plans with the intention of building in the near future. I have been limiting my search to ranches under 1800 square feet for budget reasons. I just looked at a builder's ranch that the real estate agent said was 1560 square feet but when I calculated the square footage from the floor plan based on dimensions to the outside edges of the exterior walls (excluding garage), I came up with over 2300 square feet. Am I measuring the square footage correctly, which means that the agent isn't even close. I can't imagine another way to measure that could account for such a large difference. Incidently, the price listed on the plan is much too low for 2300+ square feet - more consistent with the 1560 square feet the agent claimes. Any thoughts?